Riveting device with pressure and striker elements



Judy WQIIQSH E. M. ARTHUR RIVETING DEVICE WITH PRESSURE AND STRIKERELEMENTS Filed Oct. 29, 1947 Patented July 17, 1951 RIVETING DEVICE WITHPRESSURE AND STRIKER ELEMENTS Evan Meirion Arthur, West Heath,Birmingham, England Application October 29, 1947, Serial No. 782,935 InGreat Britain January 22, 1947 3 Claims.

I This invention relates to a riveting device for riveting a brakelining on a brake shoe, and it has 'for its object an improved device ofthe aforesaid type which is effective in action and simple andinexpensive to produce.

A further object of the invention resides in a device which enables thebrake shoe and liner to be pressed against the head of a rivet in animproved manner.

A still further object of the invention is to arrange striker means forpressing the brake shoe and liner against the rivet head so that thestriker can be applied to a rivet when located near a strengthening webon a brake shoe.

A still further object of the invention is to enable the brake shoe andliner to be pressed against a rivet head with a predetermined anduniform pressure.

In order that the invention may be clearly understood and readilycarried into effect, reference is now had to the accompanying drawings,on which: I

Figure l is a side elevation of a riveting device constructed accordingto this invention.

Figure 2 is a plan view, with a portion of the cam lever broken away.

Figure 3 is a perspective view illustrating the device applied to aportion of a brake shoe and lining.

Figure 4 is a section on line X-X of Figure 1.

Figure 5 is a section on line Y-Y of Figure 1.

Figure 6 is a section taken along line VI-VI of Figure 1.

The riveting device comprises an arm or lever I and a base member 2pivoted together on the bolt 3 which passes through the arm I and theextension 2a fixed to and forming part of the base member 2. The arm Iand base member 2 are formed of sheet metal bent into U-shapedconfiguration and the part 2a is fixed by the rivets 4 inside thechannel of the base member 2. The bend of the channel of the base memberforming arm I is notched at the top to form two cheeks between which thetailpiece 2a passes. The tailpiece 2a has a number of perforations 5 sothat the distance apart of the arm and the base member can be variedaccording to the shape or size of the parts to be riveted. The outer endof the base member 2 is filled in by a metal block 6. A screw threadedhole I is provided in the block 6 and an anvil pin 8 is detachably fixedtherein, such pin being adapted to support the head, for instance, ofthe rivet 9 adapted to fix the brake lining In to the brake shoe I I.The anvil pin 8 is replaceable so that different sizes of pins can befitted according to the size of the rivet, and the pins 8 not in use canbe screwed into tapped holes in the base member 2 for storage purposes.The outer end of the arm I forms a clamping jaw and a striker arm I2 ispivoted on the bolt I2a in the channel formed by the U- section arm I.The upper portion of the clamping jaw is cut away at I3 so that thestriker I2 is mounted between two bifurcations or side cheeks III. Thestriker I2 extends from its pivotal connection IZa to the end of thegripping arm so that the striker can operate at the extreme end of theclamping jaw. The arm I and base member 2 are normally forced apart bymeans of a spring I5 which bears on the inner edges of the arm I andbase member 2, and the extent of the opening is limited by the bar orrod I6 which passes through a perforation in the base member 2 andupwardly between the walls of the arm I and has an adjusting nut I?screwed on the portion of the rod projecting from the base member 2. Theupper end of the rod It has an integral head I8 which passes through thechannel of the arm I and through a slot in the top of the arm I, thisslot being formed by bending out side cheeks I9 from the arm I. Theupper edges 20 of these side cheeks form a bearing for a cam 25 which ispivotally mounted on the head I8 by the bolt 22. The spring I5 thereforeforces open the arm I and retains the cam 2I on its seat'Zfl and alsolimits the opening movement of the arm. In order to clamp the brake shoeparts If! and II together before the riveting operation, the cam 2| isturned by its lever 23 to cause the cheeks I4 to bear on the brake shoeII and the anvil pin 8 to bear against the head of the rivet 9. Byadjusting the nut II, the arm I can be placed in position so that themovement of the lever 23 will move the arm I into the clamping positionwhereby various thicknesses of material to be clamped can be providedfor by the adjusting nut I1. Further adjustment can be obtained byfitting the bolt 3 in any one of the required perforations 5. The basemember 2 can be fixed in the jaws of a vise 24 and the washer 25 bearson the tops of the jaws (see Fig. 6). When the parts to be riveted areclamped between the jaws on the arm I and base member 2 a blow is givento the striker I2 to effect the riveting operation. The riveting devicethus constructed is extremely simple in construction and a rivetingoperation can be effected with great ease. The parts to be riveted areclamped together before the riveting operation and therefore the partsto be riveted do not have to be pressed together initially by theriveting over of the pin. The striker is guided and constrained to giveblows which are in the axial direction of the rivet. As the lining isclamped on the brake shoe, the end of the stem of the rivet is onlyrequired to be firmly riveted over the shoe and the riveting ac,- tionis not required to initially clamp the lining and shoe together. Thestriker [2 may have a rivet head spreader [2b detachably fitted theretoso that any particular rivet head can be formed. The spreader may be inthe form of a pin having a flat or concave spreader face or again theface may be shaped for splitting and spreading a solid rivet or forfianging over a tubular rivet. The device can be used for rivetingtogether any other members. A particular feature is to be stressed inthat the L-shaped striker enables the riveting device of the inventionto be used in awkward places such as for riveting the clutch lining onclutches of motor vehicles. In the example illustrated in Figure 3, thebrake shoe has a strengthening flange and notwithstanding that the rivetis placed adjacent this flange the striker can be freely applied to therivet 9.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent, is:

1. A riveting device for riveting a brake lining on a brake shoe;comprising a base member, an arm pivotally mounted at its inner end onsaid base member, said arm including a substantially verticallybifurcated portion at the outer end thereof, an anvil pin on the outerend of said base member and opposite said bifurcated portion forsupporting the head of a rivet, a striker pivotally mounted on said armand guided between said furcations and extending forwardly to the frontof the latter, and a cam device for pressing said arm toward said basemember to thereby press 'saidbrake lining and said brake shoe againstthe head of a rivet supported on the anvil pin.

2. A riveting device for riveting two parts together, a brake lining toa brake shoe, respec tively, comprising a base member, an anvil pin on 4the confines of said furcations of said arm, said striker extendingforwardly to the front of said furcations of said arm and being pivotedat a height above the striking face of the striker, said striking facebeing such that the blow imparted by the striker is inclined to the axisof the rivet --in a direction downwardly and inwardly of the device sothat any squeezing action of the blow will not tend to force the brakeshoe outwardly, and a cam device for pressing the arm toward the basemember to thereby press the brake shoe and lining against the shoulderformed by the head of the rivet, said cam device including means adaptedto adjust said pressure.

3. A riveting device for riveting a brake lining on a brake shoe;comprising a base member having an inner end, an arm having an inner endand being pivotally mounted with said inner end to said inner end ofsaid base member, said arm being vertically bifurcated at the outer endto thereby form furcations, an anvil pin on the outer end of the basemember for supporting the head of a rivet, a striker pivotally mountedon said arm and guided between said furcations and extending forwardlyto the front thereof, a rod interconnecting said arm and said basemember, adjusting means provided at one end of said rod and bearingagainst said base member, a cam device rotatably mounted on said rod andseated on and above said arm, to thereby permit the setting of said armfor applying pressure on the parts to be riveted together with the camdevice in position for applying final pressure.

EVAN MEIRION ARTHUR.

REFERENCES CITED The following references are of record in the file ofthis patent:

